As early as 1946, top State Department official Dean Acheson warned the Truman administration that the “existence of discrimination against minority groups in this country has an adverse effect on our relations” with decolonizing Asian and African and Latin American nations. The Truman administration repeatedly briefed the U.S. Supreme Court on these adverse effects during desegregation cases in the late 1940s and early 1950s, as historian Mary L. Dudziak documents. Not to mention the racist abuse African diplomats faced in the United States. In 1963, Secretary of State Dean Rusk warned
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